Media Library relative URL

We have a Kentico project where we're using Azure Blob Storage for our media storage. When selecting a media file in a page, it stores the URL like this:
www.ourhost.net/blobcontainer/kenticosite/media/medialibrary/picture.jpg

We are also using ImageProcessor.org. This only works when the image is requested through the host itself, so we need the media library to store the absolute URL like this:
/blobcontainer/kenticosite/media/medialibrary/picture.jpg